No boost, lurches and lots of smoke

Discussion in '6.0L PowerStroke Engine & Drivetrain' started by Oboy, Dec 9, 2011.

  1. Oboy

    Oboy Full Access Member

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    So what is happening is when I try to accelerate the boost will only go to aprox. 5lbs, starts lurching and lots of smoke. Seems like someone has a chain tied to rear bumper and holding it back. This happens from a stop or when out on highway and trying to speed up. If I don’t get into the pedal that hard most of the time it will not lurch and the boost stays under 5lbs. The check engine light has not come on. Looked at all the intercooler hoses and they seem fine. I do see oil on the outside of the hose that connects from turbo to intercooler, at the intercooler. I’m lost HELP!!!!

    Thanks Mark
     
  2. BIG JOE

    BIG JOE Full Access Member

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    Re-inspect all the I/C boots, Take them off and squeeze em, looking for cracks/splits

    Air filter clean ?

    Other than that.. sounds like your VGT (turbo) may need cleaning.. i.e., yer getting fuel (black smoke) but the turbo vanes are not changing their geometry, with throttle/load demands. It's not spooling up ?

    Joe
     
  3. egregg57

    egregg57 SDD Junior Member

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    Sounds a lot like what happened to me ijn October 2010. My EGR Valve failed/was blocked to a point where the valve could not move or only could move a very Little bit.

    There may be another issue but this check will take you about 30 minutes.

    You will need a spray can of carburater cleaner, flat head screwdriver, rags and a set of new EGR Valve O rings*.



    * if you are somewhere where you can not get the O rings readily ($10 I think) you will need to be very careful not to nick or damage them.

    On the top of your motor between the Altenator and Oil Filter housing is a silver can with a connector attached to the top of it. This is the EGR Valve.

    Unscrew the two mounting screws holding the valve into the port. Remove the connector from the top of the EGR Valve.

    The valve can be, in some circumstances, in this port pretty tight. using an up ward pulling motion, twist left and right to pull the valve out of its port. If it does not want to come, a paint can lid prying tool will help, a little at a time, on either side.

    Remove the EGR Valve, carefully remove two O rings. Using the cleaner dowse the valve and remove the soot. attempt to move the valve up and down by hand and see that is is free of debris or anything else that could prevent the valve from seating.

    Inspect the port for heavy sooting. Using a vacuum cleaner remove any loose soot or debris. Do not use a cleaner inside the port.

    Reinstall the EGR Valve O rings. If you nick or cut them you MUST replace them. Reinstall the EGR Valve straight into the port, carefully with steady pressure. Again trying to prevent damage to the O rings. Reseat the valve install two screws and reconnect the harness.

    If this seems to correct the problem you are having, bring the vehicle to a dealer or shop to give the truck a check over of the EGR Valve and associated tubing.

    IF the EGR Valve is/was your problem, the remaining check over by a shop should be relatively inexpensive.

    As a caviot, the above is one possibility of your symptoms. There may be another issue at hand. For the length of time it takes to check this, it could be an easy, quick fix IF it indeed is the problem.

    Eric
     
    Last edited: Dec 9, 2011
  4. BIG JOE

    BIG JOE Full Access Member

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    THERE YA GO Mark.. What Eric said Too ;tu;tu
     
  5. egregg57

    egregg57 SDD Junior Member

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    [​IMG]
    Tools required

    [​IMG]
    Paint can lid prying tool

    [​IMG]

    [​IMG]
    EGR Valve removed

    [​IMG]
    EGR Valve cleaned
     
  6. Dogman

    Dogman Full Access Member

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    Did you clean the tube passages? Need a shop vac. and a old water hose you can cut up to 24". Tape it to the shop vac. hose and stuff it in the passages to suck the crap out. Use the tube brush to loosen this up then put the shop vac. to it.
     
  7. Oboy

    Oboy Full Access Member

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    OK I checked the hoses and they are good, pulled the EGR and it’s leaking. Black all the way out to the edges. So if this is happening, could this be my problem? If so would it be worth just getting the delete kit for it? Thanks again for your help!
    egregg57, it was a b#$% getting it out, tryed your paint idea and ended up using a brake adjusting tool to get it out!

    [​IMG]
     
    Last edited: Dec 9, 2011
  8. DaveBen

    DaveBen SDD Senior Member

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    It sure looks like it maybe your problem. The leaking around the mounting hole means you need the o-rings (3) to re-install it. They are a few dollars at Ford. I have cleaned mine a few times and it is NEVER been that dirty. Get on it every time you get into the highway. Idling will cause the EGR to get dirty quickly.

    Dave :)
     
  9. Oboy

    Oboy Full Access Member

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    I have been thinking about this overnight and the silver looking seal did not have any black on it. So is it blowing out the two holes that are on the outside of this seal? Is that how it works when the valve is sticking?

    Kinda better photo of the seal.

    Mark
    [​IMG]
     
  10. egregg57

    egregg57 SDD Junior Member

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    Stuck? If it isn't or not close to it, I would be surprised! I bet you see a significant difference as long as the valve has not failed. Looks like you need the o rings, but maybe that's all and you'll be out of your problem for chump change!

    It is possible I guess in certain circumstances to get leakage like that. Clean her up, get the o rings, make sure the valve moves with finger pressure, keep sharp tools from the valve seats, and reinstall. Worst case is you need an egr valve. They are less than 200.00.

    Eric
     
    Last edited: Dec 10, 2011

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